Cocontinuous conductive polymer composites with interfacial graphene

Lian Bai, Siyao He, John W. Fruehwirth, Andreas Stein, Christopher W. Macosko, Xiang Cheng

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Interfacial localization of graphene in the cocontinuous polymer blends is shown to be effective in stabilizing the cocontinuous morphology and increasing the conductivity with a lower electrical percolation threshold. We created polylactic acid (PLA) and polystyrene (PS) cocontinuous blends filled with thermally reduced graphene oxide (r-GO) jammed at the interface. The resulting conductive composites show dramatically improved conductivity at low filler loadings and an ultralow percolation threshold of 0.028 vol%. We found that r-GO transfers from the PLA phase to the interface during melt compounding and forms a spanning 3D network during annealing, which effective suppresses the coarsening of the cocontinuous structure. Our study demonstrated that the 3D r-GO network significantly increases the conductivity and the storage modulus of the melt blends.

Original languageEnglish (US)
Title of host publication75th Annual Technical Conference and Exhibition of the Society of Plastics Engineers, SPE ANTEC Anaheim 2017
PublisherSociety of Plastics Engineers
Pages810-813
Number of pages4
ISBN (Print)978-0-692-88309-9
StatePublished - Jan 1 2017
Event75th Annual Technical Conference and Exhibition of the Society of Plastics Engineers, SPE ANTEC Anaheim 2017 - Anaheim, United States
Duration: May 8 2017May 10 2017

Publication series

NameAnnual Technical Conference - ANTEC, Conference Proceedings
Volume2017-May

Other

Other75th Annual Technical Conference and Exhibition of the Society of Plastics Engineers, SPE ANTEC Anaheim 2017
CountryUnited States
CityAnaheim
Period5/8/175/10/17

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  • Cite this

    Bai, L., He, S., Fruehwirth, J. W., Stein, A., Macosko, C. W., & Cheng, X. (2017). Cocontinuous conductive polymer composites with interfacial graphene. In 75th Annual Technical Conference and Exhibition of the Society of Plastics Engineers, SPE ANTEC Anaheim 2017 (pp. 810-813). (Annual Technical Conference - ANTEC, Conference Proceedings; Vol. 2017-May). Society of Plastics Engineers.